/*
 * Copyright (c) 1989, 1993
 *  The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *  This product includes software developed by the University of
 *  California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *  @(#)ucred.h 8.4 (Berkeley) 1/9/95
 */

#ifndef _SYS_UCRED_H_
#define _SYS_UCRED_H_

/*
 * Credentials.
 */
struct ucred {
    u_short cr_ref;             /* reference count */
    uid_t   cr_uid;             /* effective user id */
    short   cr_ngroups;         /* number of groups */
    gid_t   cr_groups[NGROUPS]; /* groups */
};
#define cr_gid cr_groups[0]
#define NOCRED ((struct ucred *)0)  /* no credential available */
#define FSCRED ((struct ucred *)-1) /* filesystem credential */

#ifdef KERNEL
#define crhold(cr)  (cr)->cr_ref++

struct ucred    *crcopy __P((struct ucred *cr));
struct ucred    *crdup __P((struct ucred *cr));
void    crfree __P((struct ucred *cr));
struct ucred    *crget __P((void));
int     suser __P((struct ucred *cred, u_short *acflag));
#endif /* KERNEL */

#endif /* !_SYS_UCRED_H_ */
